[AquaticLife] Eheim 2227 and PH
What time of day did you test the pH? Was it first thing in the morning? Was it later in the day? Do you have any other test results for ammonia, nitrite, nitrate, GH, KH?
We went through this recently with someone else so yours may be the same situation.
Do you have live plants in the tank or is there some visible algae… or a lot of algae?
Test the water late in the afternoon after the tank lights have been on all day. The plants and/or algae would have been sucking up CO2 all day and the lower CO2 level in the water will result in a higher pH level. Generally, first thing in the morning, the CO2 level will be highest which will result in the pH being lower.
I looked at the filter information on this page… http://www.aquariumguys.com/eheimwetdry.html and I don’t see anything about the filter that would affect pH… except maybe making it higher due to the wave action which would create additional surface agitation that would provide for better gas exchange at the surface which would then lower the CO2 level in the tank thus making the pH higher.
If after testing it later in the day, you find the same results, then things need to be looked at better by doing a full batch of tests to see if something else is causing the pH to lower.
Lenny Vasbinder Fish Blog - http://GoldLenny.blogspot.com
Category: Philippines Internet Koi Society
